13172361 has 16 divisors (see below), whose sum is σ = 18130944. Its totient is φ = 8501904.

The previous prime is 13172359. The next prime is 13172363. The reversal of 13172361 is 16327131.

It is an interprime number because it is at equal distance from previous prime (13172359) and next prime (13172363).

It is not a de Polignac number, because 13172361 - 2¹ = 13172359 is a prime.

It is a super-2 number, since 2×13172361² = 347022188628642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13172363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14070 + ... + 14976.

It is an arithmetic number, because the mean of its divisors is an integer number (1133184).

Almost surely, 2^13172361 is an apocalyptic number.

It is an amenable number.

13172361 is a deficient number, since it is larger than the sum of its proper divisors (4958583).

13172361 is a wasteful number, since it uses less digits than its factorization.

13172361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060.

The product of its digits is 756, while the sum is 24.

The square root of 13172361 is about 3629.3747395385. The cubic root of 13172361 is about 236.1680850356.

Adding to 13172361 its reverse (16327131), we get a palindrome (29499492).

The spelling of 13172361 in words is "thirteen million, one hundred seventy-two thousand, three hundred sixty-one".